Merge branches 'acpi-resources', 'acpi-ec' and 'acpi-sleep'

[~andy/linux] / arch / x86 / kvm / mmu.c

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 40772ef0f2b12458f21094d9a642a487a081fdde..9b531351a5876835e3dda6527571383a7fbae751 100644 (file)
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2659,6 +2659,9 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
        int emulate = 0;
        gfn_t pseudo_gfn;
 
+       if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
+               return 0;
+
        for_each_shadow_entry(vcpu, (u64)gfn << PAGE_SHIFT, iterator) {
                if (iterator.level == level) {
                        mmu_set_spte(vcpu, iterator.sptep, ACC_ALL,
@@ -2669,6 +2672,7 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write,
                        break;
                }
 
+               drop_large_spte(vcpu, iterator.sptep);
                if (!is_shadow_present_pte(*iterator.sptep)) {
                        u64 base_addr = iterator.addr;
 
@@ -2829,6 +2833,9 @@ static bool fast_page_fault(struct kvm_vcpu *vcpu, gva_t gva, int level,
        bool ret = false;
        u64 spte = 0ull;
 
+       if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
+               return false;
+
        if (!page_fault_can_be_fast(error_code))
                return false;
 
@@ -3224,6 +3231,9 @@ static u64 walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr)
        struct kvm_shadow_walk_iterator iterator;
        u64 spte = 0ull;
 
+       if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
+               return spte;
+
        walk_shadow_page_lockless_begin(vcpu);
        for_each_shadow_entry_lockless(vcpu, addr, iterator, spte)
                if (!is_shadow_present_pte(spte))
@@ -4510,6 +4520,9 @@ int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4])
        u64 spte;
        int nr_sptes = 0;
 
+       if (!VALID_PAGE(vcpu->arch.mmu.root_hpa))
+               return nr_sptes;
+
        walk_shadow_page_lockless_begin(vcpu);
        for_each_shadow_entry_lockless(vcpu, addr, iterator, spte) {
                sptes[iterator.level-1] = spte;